Halide bulbs with a little more blue?

[digital-audiophile]

Howdy folks,

Looking for a little advice in the way of Halide bulbs. I am presently running a 13K Geisemann Megachrome SE 250W bulb. I am finding it to be a little yellow white, I was hoping for something a little more blue. (even with my actinics -2x28W- the light just isn't where I would like it.)

I really don't want to go to a 20k and lose the growth power of a lower k rating.. but I just want something that looks a little bit nicer.

Any suggestions on what you guys are running?

Thanks!